2022-05-09
Synthesis of Methyl Orange
In this experiment, sulfanilic acid and sodium bicarbonate were dissolved in water and heated to form a clear solution. After cooling, a sodium nitrite solution was added, leading to the crystallization of diazotized sulfanilic acid. A solution of N,N-dimethylaniline and acetic acid was then added, forming methyl orange. Sodium hydroxide was introduced to convert it into its sodium salt form, turning the solution orange.
Filtration was slow, so the mixture was heated with added sodium chloride. After cooling, the crystals were filtered, recrystallized in water, and washed with ethanol and ether before being dried and weighed to calculate the yield.
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